JP3213895B2 - Unlocking mechanism for rice transplanter marker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marker for a rice transplanter having a structure unlocked by actuation of a solenoid by an electric signal.

[0002]

2. Description of the Related Art A line drawing marker of a rice transplanter is attached to both sides of a planting portion at the rear of the rice transplanter. During the planting operation, the marker on the next stroke side is lowered, and the traveling path of the next stroke is placed on a field. In general, the lowering of the marker is performed by releasing the lock devices attached to the markers on each side. Conventionally, the lock device has been released by turning an operation lever disposed near the driver's seat to the left or right. That is, as shown in FIG. 22, when the operation lever 28 is rotated left or right,
At the lower portion of the guide plate 29, one of the left and right bell cranks 30L and 30R is pressed against the operating lever 28 and rotated, whereby the bell crank is turned by the lock control wires 31L and 31R. By rotating one of the connected lock members 32L and 32R provided with the left and right markers, the marker is unlocked, that is, the marker is lowered. In addition, the rise of the marker,
This is automatically performed when the planting portion is raised, and the raised marker is naturally locked by the lock member 32. Further, as the operation lever 28, a speed change operation lever for controlling the planting speed is often used, and the operation complexity is reduced in conjunction with the speed change operation. In some cases, the shift operation lever can be used to operate the clutch operation of the planting section and the elevation of the planting section.

[0003]

In the conventional marker control, since the bell crank is directly rotated by the operation lever, the operation load is large and the rotation width of the lever must be large. . In addition, since the wire is connected to the lock member of the marker of the planting portion from the operation lever provided on the traveling portion of the rice transplanter, the work of attaching and detaching the wire when attaching and detaching the planting portion was also required. is there. Therefore, by switch operation that does not require force,
It has been desired that the marker can be lowered by electrical control that does not require wire connection.

Further, the operating lever is often located on the side of the traveling section, and the wire extending from this position is
The lengths differed from side to side, causing a difference in operation between the left and right markers, and workability was not stable.

[0005]

The present invention uses the following method to solve the above problems. Marker automatically rises when planting section is raised
The raised marker is automatically locked by the locking member.
In a rice transplanter that is locked
Is provided with a marker changeover switch, and the changeover switch
The signal, press Technology of possible one of the push-pull Sole
Activating the solenoid locks the left and right markers.
It is configured to release the lock . The marker unlocking mechanism having the unlocking solenoid is disposed at the center of the planting section of the rice transplanter.

[0006]

The operation of the present invention configured as described above will be described. When one of the solenoids is used by selecting and inputting the marker switch S to select one of the left and right markers to be lowered, the operating rod 25 of the solenoid SV is pushed out or retracted. Either of the lock members 21 locked to the lock pins 24 fixed to 23 is moved outward, and the wire pulling arm 20 on the moved side is lowered.
The marker raising / lowering wire 19 on the same side is moved downward to lower the marker 4.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 is an overall side view of the rice transplanter, FIG. 2 is a side view showing a link connecting portion of a planting portion on which a marker unlocking mechanism is arranged, FIG. 3 is a front view thereof, and FIG. 4 is a rotating member 17 of the unlocking mechanism. FIG. 5 is a partial front view showing the structure of the solenoid SV and the lock member, FIG. 6 is a partial front view showing the position of the lock member 21 when the marker is locked, and FIG. 8 is a partial front view when the right marker is lowered, FIG. 8 is a partial front view when the left marker is lowered, FIG. 9 is a partial front view showing the movement of the wire pulling arm 20 and the lock member 21 when the marker is raised, and FIG. FIG. 11 is a partial front view showing the configuration of the lock member when two solenoids are used, and FIG. 11 is a perspective view showing the shape of a marker switch S1 attached to the speed change operation lever 5. 12 shows also a perspective view showing a second embodiment, FIG. 13 is also a perspective view showing a third embodiment, FIG. 14 is also a perspective view showing a fourth embodiment,
FIG. 15 is a perspective view showing the fifth embodiment, FIG. 16 is a perspective view showing the sixth embodiment, and FIG. 17 is a plan sectional view of a grip portion of the speed change operation lever 5 including the marker switch S7. 18 is a plan view of a marker switch S8 provided on the steering column, FIG. 19 is a perspective view showing a ring-shaped marker switch S9 attached to the speed change operation lever 5,
FIG. 20 is a front sectional view and FIG. 21 is a plan sectional view thereof.

First, the overall configuration of a rice transplanter will be described with reference to FIG. The planting section B is attached to the rear of the running section A by the link 1 so as to be able to move up and down. The planting section B places the seedlings on the seedling mounting table 2 and plants the seedlings in the field with the planting claws 3 at the lower end. The markers 4 are attached to the left and right of the planting section B (the left side is the marker 4L and the right side is the marker 4R), and are usually fixed at the ascending position by a lock device. The marker on the side is lowered and a mark indicating the course of the next process is drawn on the field. In the headland, the planting part B is raised for the turning work, and the marker 4 which has been lowered at that time is also Let it rise. In the present invention, the marker 4
Is lowered based on the operation of the solenoid for unlocking the marker installed in the planting section B, and the marker switch S is attached to the shift operation lever 5 provided near the driver's seat of the traveling section A. Then, the solenoid is operated by the switch operation.

FIG. 1 shows the shape of the marker switch S.
This will be described with reference to FIGS. The direction of arrow F in the figure indicates the front. FIG. 11 and FIG. 12 show a case where the switch is a lever-shaped switch for inputting by tilting left and right.
In FIG. 12, marker switches S1 and S2 are provided above the grip portion of the speed change operation lever 5, and FIG. The marker switches S1 and S2 have a simple lever-type structure. FIGS. 13 to 16 show a push-button type switch as a marker switch, which is disposed at a position deviated from the position of the hand that normally grips the speed change operation lever 5. The marker switch S3 in FIG. 13 is provided at both ends of the upper part of the speed change operation lever 5, and the marker switches S4 and S5 in FIG. 14 and FIG. The marker switch S6 shown in FIG. 16 is provided on both sides of the speed change operation lever 5, and the button pressing portion is located at the front of the speed change operation lever 5 so that the button pressing portion is located inside the front surface of the grip portion of the lever. Is what it is.

FIG. 17 shows a structure in which a marker switch is input by rotating the grip portion of the speed change operation lever 5 right and left. When the grip portion is rotated, the structure inside the grip portion is formed. The switch S7 is turned on by pressing the marker switch S7 against the connection terminals disposed on the left and right sides. FIG.
Is a marker switch S8 constituted by a lever 6 protruding from the steering column, not by a shift operation lever, which can be switched by turning the lever 6 back and forth (left and right) while holding the steering wheel.

FIGS. 19 to 21 each include a ring-shaped marker switch S9. The marker switch S9, which is integrated with a ring and is annularly formed on the side surface of the grip portion of the speed change operation lever 5, is positioned at one of the right and left positions. By pressing the switch, the unlock switch of one of the markers is input.

The present invention provides a marker switch S as described above.
The solenoid is actuated based on the input of (1) to unlock the marker. As shown in FIG. 2 and FIG. 3, the connecting portion of the planting portion B on which the lock release device is disposed is provided with link frames 8L and 8R at the rear ends of the top link 1a and the lower link 1b by pivot shafts 9 and 10. The link frame 8L, 8R is pivotally supported, the hitch 7 is provided at the upper end, the fitting member 11 is arranged at the lower part, and the upper and lower parts of the front frames 14L, 14R supporting the planting portion B are detachably fitted. They are combined. 26 is a release lever. The center of a "L" shaped cam 12 is pivotally supported on the pivot shaft 9, a rod 13 is pivotally connected between the front end of the cam 12 and the rear of the lower link 1b, and the rear side of the other side is a rotating member. The rotary members 17L and 17R are pivotally supported by front shafts 14L and 14R by a shaft 16, and the other ends of the rotary members 17L and 17R are connected with marker lifting wires 19L and 19R. The locking arms 20L and 20R protrude downward from the middle part.

In such a configuration, when the planting portion B is raised, the rod 13 pivotally connected to the lower link 1b is pulled, and the cam 12 pivots downward about the pivot shaft 9 as a fulcrum. The rear surface is a roller 18 of a rotating member 17L / 17R.
Push L.18R to rotate the member 17L.
17R rotates to move the marker up and down wires 19L and 19R
To raise the marker 4, and the locking arm 20L
20R is locked by the lock device of the present invention.

The locking device of the present invention is a front frame 14L.
Lock members 21L and 21R are arranged so that the lower ends thereof are pressed when the left and right locking arms 20 are rotated downward between the frames 15L and 15R disposed at the rear of the 14R. The members 21L and 21R are fitted into spring cases 22L and 22R fixed to the frame 15, respectively. In the spring case 22, a return spring is externally fitted to the lock member 21 so as to protrude (toward the center). It is energizing. A long hole 21a is opened on the outside of both lock members 21. Locking pins 24L and 24R are inserted into the long holes 21a, and the locking pins 24L and 24R are fixed to the connecting plate 23. Actuating rod 2 of solenoid SV is attached to stop pin 24L.
5 is connected to the tip. The solenoid SV is constituted by a push-pull solenoid that can be pushed and pulled.

The operating portion constructed as described above is arranged centrally at the center, and the unlocking and the locking operation are performed. As shown in FIGS. 4 to 9, the unlocking will be described first.
The unlocking is performed by the operation of the solenoid SV based on the input of the marker switch S. FIG. 6 shows a state where the left and right markers are pulled up and locked. In this case, the position of the tip of the operating rod 25 of the solenoid SV and the position of the locking pin 24L are set to the illustrated N position, and the locking pins 24L and 24R are located outside the elongated holes 21L and 21R of the locking member, respectively. The members 17L and 17R are positioned in a side view 17a, hold the marker lifting wires 19L and 19R in a raised state, and fix the markers 4L and 4R at the raised positions.

As shown in FIG. 7, when the right marker 4R is lowered, the operating rod 25 of the solenoid SV is pushed out, and the locking pin 24L is inserted into the long hole 2 of the lock member 21L.
Position inside from outside position within 1a (position R in FIG. 6)
Go to For this reason, the lock member 21L does not move, but the lock member connecting plate 23 moves to the right side of the machine body together with the lock pin 24L, and the lock pin 24R is located outside the long hole 21a of the right lock member 21R. The lock member 21R is pulled to move to the right side of the fuselage, and the right lock member 21R is retracted. The supporting arm 20R is lowered to the position 20b in side view in FIG. 19R is extended, and the right marker 4R is lowered.

FIG. 8 shows a case where the left marker 4L is lowered. In this case, the operating rod 25 of the solenoid SV is retracted, and the locking pin 24L is moved to L in FIG.
Position, and the locking pin 24L is locked by the locking member 21L.
Is pulled to the left of the planting portion, the locking arm 20L is lowered, the left rotating member 17L is rotated, the left marker lifting wire 19L is extended, and the left marker 4L is lowered. During this time, the lock member connecting plate 23 moves to the left side of the planting portion with the movement of the lock pin 24L, but the lock pin 24R moves to the long hole 21 of the right lock member 21R.
a, the right locking member 21 does not move only by moving inside the hole, and the locking arm 20R remains supported.

Next, regarding the raising and locking of the marker, the marker 4 is raised and locked by raising the planting portion B. That is, FIG.
When the planting portion B is pulled up as described above, the cam 12 rotates from the D position to the U position with the rotation of the lower link 1b, and the roller 18 attached to the rotating member 17 at the 17b position corresponding to the marker lowering position is moved. , The roller rotating unit 12
By pressing at a, the roller 18 rotates,
When the rotating member 17 rotates smoothly and the cam 12 reaches the U position, the rotating member 17 is at the position 17c. At this time, the locking arm 20 rotates from below to rotate the locking member 2.
1, but the locking pin 24 is locked at a position outside the long hole 21a, so that the lock member 21 can be moved outward by the width of the long hole 21a. In addition, since the lower part of the distal end of the lock member 21 is inclined and comes into contact with the locking arm 20 that has turned from below, the lock member 21 is opposed to the spring as shown in FIG. The latch arm 20 is smoothly pushed outward and reaches the position 20c. Thus, the rotating member 17
reaching the position c, pull up the wire 19 for raising and lowering the marker,
The marker 4 is raised.

When the locking arm 20 passes, the lock member 21 is pushed out to its original position by the restoring force of the return spring in the spring case 22. And then,
When the planting portion B is lowered, the cam 12 returns to the position D,
Accordingly, even if the locking arm 20 is pivoted downward, the shape of the distal end of the lock member 21 is horizontal at the upper part, regardless of the pressing of the wire pulling arm 20. The wire is not pushed out, so that the wire pulling arm 20 is supported, and the marker is fixed at the pulling position. The structure for unlocking the left and right markers using one solenoid SV has been described above.

Next, a case where two solenoids SV shown in FIG. 10 are used and connected to the left and right lock members 21L and 21R will be described. Operating rod 2 of solenoid SV1
The distal end of the 5R is locked at a position outside the long hole 21a of the right locking member 21R via the locking pin 24L. The long hole 21a of the left locking member 21L is connected to the distal end of the operating rod 25L of the solenoid SV2. The fixed locking pin 24R is fitted and locked at a position outside the hole. Each locking pin 24L ・ 2
4R is an operating rod 25L of each of the solenoids SV1 and SV2.
25R, and unlike the configuration of FIGS. 2 to 9, since the lock member connecting plate 23 is not interposed, the two lock members 21L and 21R are operated completely independently. When lowering the marker 4 on each side, the operating rod 25 of each solenoid is operated based on the input of the marker switch S.
Is retracted, the locking pin 24 is
1 is pulled outward, the locking member is retracted, and the locking arm 20 is lowered. The structure of raising and locking the marker is the same as that disclosed in FIGS. As described above, the marker, which has been conventionally controlled by operating the operation lever, is configured to unlock the marker by electric control by a switch operation and to lower the marker, so that the operation lever as in the related art is used. The marker operation can be performed easily while performing other operations without requiring the load of the stroke associated with the operation, thereby improving work efficiency. In addition, since the marker raising / lowering wire has a structure accommodated in the planting section, and the operation of the solenoid of the planting section by the marker switch input of the traveling section is an electrical control, as in the related art,
There is no need to attach and detach a wire for raising and lowering the marker between the running portion and the planting portion, which saves labor and reduces the damage of the wire due to an accident.

[0021]

According to the present invention, the following effects can be obtained by the above configuration. As in claim 1,
When raising the planting part, the marker is automatically raised,
The raised marker is automatically locked by the locking member.
On a rice transplanter with a
A car changeover switch is provided and a signal from the changeover switch is provided.
One push-pull solenoid that can be pushed and pulled
To unlock the left and right markers
, So one solenoid is used.
Therefore, the operating rod 25 of the solenoid SV is pushed out or
Is retracted, and accordingly, the lock member connecting plate 23 is
Of the lock member 21 locked by the fixed locking pin 24
Either move outward, pull up wire on the moved side
Lowering the arm 20 for the marker on the same side
-Move the lifting wire 19 downward and move the marker 4 down.
It can be lowered.

According to a second aspect of the present invention, since the marker unlocking mechanism having the unlocking solenoid is disposed at the center of the planting portion of the rice transplanter, the length of the marker lifting wire with respect to the left and right markers is uniform. There is no operation difference between the left and right markers, and the operation is stable.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a side view showing a link connecting portion of a planting portion on which a marker unlocking mechanism is arranged.

FIG. 3 is a front view of the same.

FIG. 4 is a partial side view showing a rotation structure of a rotation member 17 and a cam 12 of the lock release mechanism.

FIG. 5 is a partial front view showing a configuration of a solenoid SV and a lock member.

FIG. 6 is a partial front view showing a position of a lock member 21 when the marker is locked.

FIG. 7 is a partial front view when the right marker is lowered.

FIG. 8 is a partial front view when the left marker is lowered.

FIG. 9 is a partial front view showing the movement of the wire pulling arm 20 and the lock member 21 when the marker is pulled up.

FIG. 10 is a partial front view showing a configuration of a lock member when two solenoids are used.

FIG. 11 is a perspective view showing the shape of a marker switch S1 attached to the speed change operation lever 5.

FIG. 12 is a perspective view showing a second embodiment.

FIG. 13 is a perspective view showing a third embodiment.

FIG. 14 is a perspective view showing a fourth embodiment.

FIG. 15 is a perspective view showing a fifth embodiment.

FIG. 16 is a perspective view showing a sixth embodiment.

FIG. 17 is a plan cross-sectional view of a grip portion of the speed change operation lever 5 including the marker switch S7.

FIG. 18 is a plan view of a marker switch S8 provided on a steering column.

19 is a perspective view showing a ring-shaped marker switch S9 attached to the speed change operation lever 5. FIG.

FIG. 20 is a front sectional view of the same.

FIG. 21 is a plan sectional view of the same.

FIG. 22 is a configuration diagram of a conventional unlocking of a marker by an operation lever 28.

[Explanation of symbols]

 S · S1 to S9 Marker switch SV solenoid 5 Gear shift operation lever 17 Rotary member 21 Lock member 25 Operating rod

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01B 69/02 A01C 11/02

Claims (2)

(57) [Claims] The marker is automatically activated when the planting section is raised.
The raised marker is automatically locked.
In a rice transplanter that is locked by
A switch for switching the marker is provided on the operation lever, and the switch
One push that can be pushed and pulled by the signal from the switch
Activating the pull solenoid activates the left and right markers.
A mechanism for unlocking a marker for a rice transplanter, wherein the mechanism is configured to unlock the key. 2. A marker having an unlocking solenoid.
-The lock release mechanism is located in the center of the planting part of the rice transplanter
2. The unlocking mechanism for a rice transplanter marker according to claim 1, wherein: